Cross winding machine for textile threads and yarns



1-1. SCHWEITER CROSS WINDING MACHINE FOR TEXTILE THREADS AND YARNS FiledNov 18 1925 '7 Sheets-Sheet 1 Dec. 14 1921,. 1,610,619

H. SCHWEITER CROSS WINDING MACHINE FOR TEXTILE THREADS AND YARNS FiledNov 18, 1925 7 Sheets-Sheet 2 Dec. 14,192e. 1,610,619 H. SCHWEITER CROSSWINDING MACHINE FOR TEXTILE THREADS AND YARNS Dec. 14, 1926. 1,610,619

H. SCHWEITER' CROSS WINDING MACHINE FOR TEXTILE THREADS AND YARNS FiledNov. 18, 1925 7 Sheets-Sheet 4 Dec. 14 1926.

1.610.619 H. SCHWEITER cnoss WINDING MACHINE FOR. TEXTILE THREADS ANDYARNS Filed Nov. 18, 1935 '7 Sheets-Sheet 5 n u ll' 1-- 1| II- In I l uI. I. .1" 1 6 I i a Dec. 14 1926. 1,610.619

H. SCHWEITER CROSS WINDING MACHINE FOR TEXTILE THREADS AND YARNS Filed1925 7 Sheets -Sheet e v u n 1,610,619 H. SCHWEITER I v CROSS W'INDI NGMACHINE FOR TEXTILE THREADS AND YARNS Filed Nov. L 1925 '7 Sheets-Sheet7 I I I Patented Dec. 14;, 1926.

' UNHTEE) STATES PATENT QFHQEZ.

HANS SCHTWEIIER, OF HQRGEN, NEAR .LUB'JIOH, SWITZERLAND.

CROSS WINDING MACHINE FOR TEXTILE THREADS AND YARNS.

Application filed November 18, 1925, Serial No. 69.845, and inSwitzerland July 10, 1925.

The invention relates to cross-winding machines with an automaticallyvariable traverse winding length of the type in which the spool and camdrum for driving the thread guide are driven at a constant speed.

In the known crosswindi'ng machines of this type the shortening of thetraverse of the thread guide is effected by the movement of feelers orrollers, due to the increase in the diameter of the bobbin duringwinding. This method has the disadvantage-that the material being wound,especially if it is silk or artificial silk, suffers from the pressureof the feelers.

The object of the invention is to remove this and other disadvantagesand to provide a device which causes the traverse to be automaticallyvaried without the aid of the changing diameter of the bobbin.

For this purpose we arrange that the reciprocating movement produced inknown manner by the cam drum causes a variable axial reciprocatingmovement to be imparted to the drum, so that during certain periods thetraverse of the thread guide is uniformly shortened or lengthened, andbobbins are produced with tapering ends or of a bulging shape.

The accompanying drawings illustrate three examples of apparatusaccording to the invention, with two bobbin winding sets.

Fig. 1 shows one example in elevation, partly in section;

Fig. 2 is a plan view thereof,

Fig. 3 is a side view, and

Fig. 41- is a vertical section on the line 1-4 of Fig. 1;

Figs. 5 and 6 are respectively a side view and an elevation of thesecond example, and

Figs. 7. 8 and 9 are respectively a side view, an elevation and avertical section of the third example. the section in Fig. 9 being onthe line 99 ofFig. 8.

To the thread guide rod 1 (Fig. 1) there is attached a pin with a roller2 which engages the cam groove 3 of the drum 4, by means of which. areciprocatory movement of the rod 1 is produced. The thread guide rod 1is linked by means of a carrier bracket 5 passing diagonally through therod to one end of a lever 8 which is fulcrumed on the axle 6, and theother end of which is in the form of a disc 7. The disc: 7 is rotatablymounted in the machine frame 100 and has on its front side a diametricalslot 9 to guide a sliding block 10. This sliding block is mounted on ascrew bolt 11 (Fig. 4) having a collar 11 with two flats to beadjustable in a slot 12 in a lever 14 fulcrumed on an axle 13 andadapted to be fixed in position by means of a nut 11 I The upper portionof the lever 14 is provided with a second slot 15 and is engaged by theforked end of a rod 16. connected thereto by means of a screw bolt 17and block 18 slidable in the said slot 15. In an axial bore of'the rod16 there is arod 19 adjustably connected by a screw thread 22 to asleeve 21, which is rotatable but not axially movable on the shaft 20 ofthe cam barrel 4.

In a concentric recess on'the rear side of the disc 7 there is mounted adisc 23 in such a manner as to be adjustable and capable of being fixedtherein, and in this disc a pawl 24 is mounted on a screw 25. By turningthe screw 25 so that it presses against the disc 7 a clamping action isexerted on the central screw 23 and in this way the disc 7 is locked.The pawl 24 engages the ratchet teeth 28 of a disc 27 rotatably andaxially movable on the pivot 27 v in the frame 100, and imparts to thedisc 27 stepwise rotary motion. The disc 27 has a spiral crown thread26, which engages in a rack 29 movable in a vertical slot of the frame100 and carrying a soft buffer disc 30. The rack 29 carries a pivot 31for the actuating lever 14 and a bent arm 32 to which one end of aspring 33 is secured while the other end thereof is suspended on theframe at- 34. The object of the spring 33 is to lift the rack 29together with the lever 14 into their original position when the rack 29is disengaged from the spiral crown thread 26 after having been inengagement therewith. On the pivot 27 is mounted a spring 35, whichkeeps the crown thread disc 27 in engagement with the rack 29. Fordisengaging the two parts a pin 36 is used, which abuts against the disc27 and is adaptedto be moved by means of a twoarmed disengaging lever 37mounted. on the frame. The lever 37 can be operated by hand orautomatically. For this purpose, there is mounted on the counterhold 10,which retains the bobbin 38 and is movable on the rod 39, (Figs. 1 and3) a bolt 41 that is pressed against the disengaging lever 37 andimparts the disengaging movement thereto.

The mode of operation of the apparatus is as follows:

The cam groove 3 of the cam barrel 4 imparts to the thread guide rod theaxially reciprocating motion required for constant traverse. The lever 8and disc 7 are caused to oscillate about the axle 6. Before the windingof a bobbin is started the sliding piece 10 must be adjusted and fixedin the slot 12 of the lever 14 by means of the bolt 11, and the rack 29together with the lever 14 must be moved to their highest position bymeans of the spring 33. In Figs. 1 and 4 the sliding piece 10 is shownin its zero position, i. e., in the position concentric with the axle 6,in which no rotary motion is transmitted from the disc 7 to the lever1 1. If, however, the sliding piece 10 is in a posi: tion eccentric tothe said axle the lever '14 is on the swinging of the disc 7. likewiseswung by means of the sliding piece 10, and the bolt 11 and cam barrel lare given an axial to and fro movement which reduces or increases thedisplacement etfected by the cal groove 3, according to whether thedisplaceient by the cam groove and that of the cam barrel l are inopposite or in the same directions. In this way the traverse is reducedor increased.

lVhen the disc 7 swings, the crown thread disc 27 is rotated stepwise inone direction by the pawl 2d, and moves the rack 29, downwardly togetherwith the lever 14, so that the sliding block 10 descends in the slot 12of the disc 7 and consequently causes a gradual increase in the strokeof the lever 14 and thus a shortening of the traverse, as thedisplacement due to the cam groove reduced by displacement of the cambarrel in the opposite direction.

lV hen the winding is completed the countcrhold 4:0 is withdrawn in thedirection of the arrow P and the disc 27 is moved out of engagement withthe rack 29 by the-action of the bolt 41 on the disengaging lever 37whereupon the spring 33 returns the rack 29 together with the lever 14-to the initial position.

If, however, the bolt 11 together with the sliding block 10 are, beforethe beginning of the operation, adjusted in the upper end of the slot12, whereby the sliding block 10 travels in the upper portion of theslot 9 of the disc 7, a displacement of the cam barrel takes place whichincreases the displacement due to the cam groove, so that the traverseis increased and a bulged bobbin is produced.

In the example shown in Figs. 5 and 6 the crown thread disc 27 has anannular V shaped groove e2 in which. engages an actuating eccentric 43with a wedge-shaped edge. This eccentric is carried by the arm i l: of abell-crank lever 4:41;, 45 which i. loosely mounted on the hub of thedisc 27 and the other arm of which has a surface and an fiscillation ofthe lever 3* and the d cs 7 and causes the roller i to engage oh. onesurface the bell-crud; le 14, d5 and to t n in the direction of r itarrow T G) that the crown thr disc 2? is rotated by means of theeccentric d3. t tion of the hell-c 'auk lever has no effect. By acorrespond justnzent of the disc -18 b L the bcl. crank leve i l, 453there can be prcduced earlier or later action of the roller upon theoblique surface 417 of the arm l5 and relativel conse ly greater orsmaller strol-te oi" the or a or or smaller angumeat of the disc 27. Theremain. 3 of the machine is like that describcd with reference to Figs.1 to 4:.

In the case of the example according to Figs. 7 to 9 there is usedinstead of the crown thread disc 27 a screw 270 which ongages in therack On the unthreadod shaft 271 of the screw 270 there rigidly mounteda ratchet whrel of 'hich a pawl 273 is held in engagement under theaction of a siiring 2T5 upon pin 2% carried by said pawl. The pawl 273is loosely mounted on and the spring 1r; nxed to an arm 45 of two-armedlever 15 45 which is mounted on" the frame 1,000 and the arm 45 of whichis actuated by the roller 500 in the same manner, as is the arm of thebell-crank lever +54, is operated by roller 50 in the case of theexample illustrated by Figs. 5 and 6. The arms d5, 4-5 are connectedtogether by a screw i51 It may be readily seen that the screw 270receives a step by step rotation from the roller 2 with the teeth 500and thus acts in the same way as the crown thread disc 27 The screw 270is lil ly reciprocating movement to said cam barrel, whereby, duringpredetermined periods the traverse of the thread guide is uniformlyvaried.

2. A cross winding machine according to claim 1 in which the means forimporting a reciprocating movement to the cam barrel comprises a pivotedlever having its free end pivoted to the thread guide, a second pivotedlever, means for connecting the free end of said second lever to saidcam barrel, a slot in said first mentioned lever, and an adjustable pinon said second mentioned lever engaging said slot.

3. A cross winding machine according to claim 1 in which the means forimparting a reciprocating movement to the cam barrel comprises a leverhaving one end formed as adisk mounted for free rotation on the frame ofthe machine, and its other end pivoted to the thread guide, a secondpivoted lever having its free end connected to the cam barrel, adiametrical slot in said disk, and an adjustable block on said secondmentioned lever engaging in said diametrical slot.

4. In a cross Winding machine having a spindle and a cam barrel drivenat constant speed, a thread guide reciprocated by said cam barrel, apivoted lever having its free end pivoted to said thread guide, a secondpivoted lever having its free end connected to said cam barrel, a slotin said first mentioned lever, a block adjustably mounted on said secondmentioned lever and engaging in said slot, and means for uniformlymoving the pivotof said second mentioned lever during the winding of aspool, whereby the traverse of the thread guide is automatically variedduring the operation of the machine.

5. A cross winding machine according to claim lin which the means formoving the DlVOt of the second mentioned lever comprises a rotatablemember, a cam groove on said member, means actuated by a reciprocatingmember of the machine for imparting step by step rotation to saidrotatable member, and a follower for said cam groove, said secondmentioned lever being pivoted on said follower.

6. A cross winding machine according to claim 4 in which the means formoving the pivot of the second mentioned lever comprises a rotatablemember, a cam groove on said member, means actuated by reciprocatingmember of the machine for imparting step by step rotation to saidrotatable memher, and a follower for said cam groove, said secondmentioned lever being pivoted on said follower, and means fordisengaging said cam follower from said cam groove.

7. A cross Winding machine according to claim 4- in which the means formoving the pivot of the second mentioned lever comprises a rotatablemember, a cam groove on said member, means actuated by a reciprocatingmember of the machine for imparting step by step rotation to saidrotatable member, and a follower for said cam groove, said secondmentioned lever being pivoted on said follower, and means actuatableupon removal of a spool from the machine for disengaging said camfollower from said cam groove.

8. A cross winding machine according to claim 4 in which the means formoving the pivot of the second mentioned lever comprises a rotatablemember, a cam groove on said member, means actuated by reciprocatingmember of the machine for imparting step by step rotation of saidrotatable member, and a follower for said cam groove, said secondmentioned lever being pivoted on said follower, resilient means forholding said rotatable member follower, and means for moving saidrotatable member from engagement with said follower against the actionof said resilient means.

9. A cross winding machine according to claim 4 in which the means formoving the pivot of the second mentioned lever comprises a rotatablemember, a cam groove on said member, means actuated by a reciprocatingmember of the machine for imparting step by step rotation to saidrotatable member, and a follower for said cam groove. said secondmentioned lever being pivoted on said follower, and means fordisengaging said cam follower from said cam groove, comprising a bellcrank lever, a crank en gaging one arm of said bell crank lever, acoiinterhold adapted to hold a spool in position in the machine, an armfor oscillating said cranlr engaging said counterhold, and meansoperable by the other arm of said bell crank lever for disengaging saidrotatable member from said follower, whereby, upon movement of saidcrank oscillating arm to remove a spool from the machine, said r0-tatable member will be simultaneously disengaged from said follower.

10. A cross Winding machine according to claim l in which the means formoving the pivot of the second mentioned lever comprises a rotatablemember, a cam groove on said member, means actuated by a reciproeatingmember of the machine for i1npart ing step by step rotation to saidrotatable member, and a follower for said cam groove, said secondmentioned lever being pivoted on said follower, means fordisengagingsaid cam follower from said cam groove, and re silient means tending tohold said cam follower in normal position. i

11. A cross winding machine according to claim 4 in which the means formoving the pivot of said second mentioned lever comprises a rotatablemember, a two armed lever, a pin on said first mentioned lever inengagement with said i ltd) adapted to engage one arm of said two armedlever, means on the other arm of said twoarmed lever for engaging saidrotatable member to rotate the same with a ste by step movement, a camgroove on said rotatable member, and a cam follower for said cam groove,said second mentioned lever being pivoted on said cam follower.

19 A cross winding machine according to claim l: in which the means tormoving the pivot of said second mentioned lover comprises a rotatablemember, tvo armed lover, a pin adiustabl mounted on said mentioned leveradapted to engage one arm of said two armed lever, means on the otherarm oi said two armed lever for engaging said rotatable member to r tatethe same with a step by step movement, a cam groove on said. rotatablemember, and a cam tollower tor said cam groove, said second mentionedlever being pivoted on said cam iollower.

18. A cross winding machine according to claim in which the means formovin the pivot of said second mentioned lever ompriscs a rotatabledisk, an adjustable ttriclion gear for rotating said disk with a step bystep movement, a spiral crown thread on said disk, and a followerengaging said crown thread, said second mentioned lever being pivoted onsaid follower.

i l A cross winding machine according to claim in which the means formoving the pivot of said second mentioned lever comprises a rotatabledish, a two armed lever rotatably mounted on a pivot concentric withrespect to said disk, a peripheral groove on said disk, a member pivotedeccentricallv on one arm of said two armed lever and engaging in saidperipheral groove, means for rocking Said two armed lever to rotate saiddisk with a step by step movement, a cam groove on said disk, and afollower for said can groove, said second mentioned lever being pivotedon said 1 ollower.

'15. A cross winding machine according to claim lin which the means formoving the pivot of said second mentioned lever com prises a rotatabledisk, a two armed lever rotatably mounted on a pivot concentric withrespect to said dish, a peripheral groove on said disk, a member pivotedeecentricallv on one arm 01 said two armed lever and engaging in saidperipheral groove, means for rocking said two armed lever to rotate saiddisk with a step by step movement, comprising a disk mounted foradjustable rotation on said first mentioned lever, and a pin,eccentrically mounted on said second mentioned disk and engaging theother arm of saidv two armed lever, a cam groove on said first mentioneddisk, and a folk or for said cam groove, said second mentioned leverbeing pivoted on said follower.

16. A cross winding iacliine according to 7, 4i in which the means formoving the oivot ot said second mentioned lever comprises rotatabledish, a. two armed lever rotatabl v 1"")lfl1i'QCl. on a pivot concentricwith respect to said disk, a peripheral groove on said disk, a memberpivoted eccentric-ally on one arm of said two armed lever and engagingin said peripheral groove, means tor rocking said two armed lever torotate said disk with a step by step movement, comi rising a diskmounted for adjustable rotation on said first mentioned lever, and pineccentrically mounted on said second mentioned disk and engaging theother arm of said two armed lever, the surface or said other arm whichis engaged b said pin having a portion concentric to the pivot of saidfirst mentioned lever, and a portion tangential. to said concentricportion.

17. A. cross winding machine in accordance with claim A} in which themeans for moving the pivot of said second mentioned lever comprises arotatably mounted screw, a rack engaging said screw, and means forimparting step bv step rotation to said screw, said second mentionedlever being pivoted on. said rack.

In testimony whereof the foregoing specification is signed.

HANS SCHVVEITER.

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